duperemove
Finds duplicate filesystem extents and optionally schedule them for deduplication.
TLDR
Search for duplicate extents in a directory and show them
$ duperemove -r [path/to/directory]
Deduplicate duplicate extents on a Btrfs or XFS (experimental) filesystem
$ duperemove -r -d [path/to/directory]
Use a hash file to store extent hashes (less memory usage and can be reused on subsequent runs)
$ duperemove -r -d --hashfile=[path/to/hashfile] [path/to/directory]
Limit I/O threads (for hashing and dedupe stage) and CPU threads (for duplicate extent finding stage)
$ duperemove -r -d --hashfile=[path/to/hashfile] --io-threads=[N] --cpu-threads=[N] [path/to/directory]
